This is what so confuses me. It’s the same reason that your phone makes a horrible TV remote. You have to look back and forth between the controller and what it’s controlling.
I’m genuinely confused why automakers (it’s not just Tesla but they seem to be the worst offenders) do this. Even if we get full self-driving cars tactile controls are still far superior for basic functionality to a touchscreen. For more specific operations sure, but I shouldn’t have to aim a finger mash to change the volume.